Gearing mechanism for tubing machines



May 10, 1927.

V. RO YLE GEARING MECHANISM FOR TUBIRG MACHINES Filed Oct 17. 1919 '7 Sheets-*Sheet 1 In! 7 F 5 o o a \J m q a M 7 wm 3 5: W jaw o m HRIHR 3 an m do "Mn 3 ma |v m KE L Q Q L hp .2. LH F 2.

May 10, 1927. v. Row-E GEARING lscmmlsu FOR TUBING MACHINES 7 Sheots-$heet 3 F1104 Oct- 17, '1919 ay 10, 927, VOROYLE GEARING uscnlmlsu FOR TUBING mcnmns Filed Oct. 17. 1919 7 Sheets-Sheet 4 y r v. ROYLE GEARING MECHANISM FOR TUBING MACHINES' Filed 001:. 17. 1919- '1 sheat s-Sheet 6 E; 9w Am 5 1 n m .w m &@ w n Mm. w v rm wr W 5 1H1! ow 0Q or M Q m n L Fl m0 2 ww W QM QSN 2 W K m m U I an l om ma A 3 Qm fl\\ mm w v A 2 gs- May 10, 1927. v. ROYLE GEARING uscmmxsu FOR mime mourns Filed Oct. 17. 1919 '7 sheets-sheet '7 Patented May 10,1927. 1,627,

UNITED STATES PATENT OFFICE.

GEABING MECHANISM FOR TUBING MACHINES.

Application filed October 17, 1919. Serial No. 881,895.

This invention relates to gearing mechaalinement during shipment, so that, when nism for tubing machines, and has for its received by the user, it would have to be reobject to provide apparatus of this character set and realined in order to function to the which includes meansfor driving the screw best advantage. Indeed, it frequently hapor plodder at different speeds from a con pened that a machine which had been perstant initial speed, to adapt it for operating fectly set up at its place of manufacture, upon materials of different consistencies and when received by the purchaser would not in connection with the manufacture of artieven operate, owing to misalinement. cles of different sectional sizes and shapes' These machines have been and are still 10 Another object consists in providin such designed to operate upon materials of very an apparatus with an improved bed and with different consistencies and I have found that means for accommodating motors of dififerdifferent materials require a different 0 er- 05 t. sizes. I ating speed of the plodder or screw. his Another object consists in providing'sueh' requirement has not been adequately satis- 15 an apparatus with means for adjusting the lied in former machines.

power shaft bearings,'both horizontally and It is also a fact that these machines are vertically, in order to establish perfect usedin heavy work and it has heretofore alinement'. been the custom to make them of very con- Another object consists in providing such siderable size and Weight in order to enan apparatus with means for adjusting the able them to stand up under their service drive shaft bearings, both horizontally and requirements, with resulting waste of mavertieally, inorder to establish perfect terialand floor s ace. alineme'nt. In designing t e machine which consti- A further object consists in providing certutes my present invention, I have had in 25 tain improvements in the form, construction mind to obviate these limitationsand disadand arrangement of the several parts wherevantages of former machines. The bed of by the above named and'other objects may my improved machine is built up from relaso be effectively attained. tivelylight individual longitudinal and In the ordinary apparatus of this kind, cross members composed of hollow metal, the bed of the machine is cast in a single these members being suitabl bolted topiece of metal and this is not only a diflicult gether. This makes a bed w ich islight, and expensive operation, owing to the size very rigid, relatively simple and cheap to 86 of the part ;.,but, a bed of this kind' is very manufacture, and which may be easily inliable to warp and very difficult to keep creased or reduced in size b changing the 86 exactly level. liurthermore, it has not been dimensions of one or more 0 the individual customary to provide ample space for propmembers. The separability of the parts encrly locating on the bed an electric drive ables them to be stored inaismall. space, and motor, o\ving ,to the undesirabilitof in this is aconsideration of importance to a. Y creasing the area of the bed to this extent. manufacturer who is required tokeep stock 4 Again, the standards and bearings for sup-- on hand. Finally, and perhaps most 1m rporting the shafts and gears have not been tantly, I have found that a built up of adequatelyv provided with satisfactory fea this character is exceedingly rigid and very tures of adjustment for properly alining the easy to level, and that. it does not get out arts. i of true during shipmentor warp in any These conditions have givenrise to a great manner. I alsoprovide the bed with superdcal of difliculty in the manufacture, shipimposed cross rails that may be secured ment and installation of such appartus for thereto by bolts and project laterally therethe reason, among others, that it entailed a "from. These rails are adapted for the regreat deal of painstaking labor to properly ception of anelectric motorand enable the 5 place the various parts on the bed and aline latter to be placed in any desiredposition them with each other-rand because of the with respect to the remainder of the appafact that. after a machinehad been properly ratus, without, in efiect, increasin the s ze set up and alined, it would notretain this or materially increasing the ,weig t of the As means for supporting the shafts and gears, I use standards of inverted V form and these are very strong and rigid, though light and compact. These standards are bolted to suitable parts of the bed and are adapted to receive on their sloping sides 1 brackets and bearings which may be secured 7 important feature of thereto in any desired position. Certain of the bearings are loosely fitted in their brackets and are flanged to permit them to be adjustably secured therein. I thus provide an arran ement in which the shaft bearings are, in e ect, movable horizontally and vertically to anample extent for mounting the .shafts and gears carried therebyin suitable alinement and mesh with their complementary parts. This greatly simplifies and facilitates the operationof setting up and aliningthe machine and permits an economy of space; so that it also constitutes an important feature of my invention.

In convenient juxta-position to the main gear which actuates the plodder. I locate sets of change speed and intermediate gears, which are conveniently movable for effecting communication between the main gear and the driving gear actuated from a source of power. This enables the main gear, and hence the plodder, to be driven at any speed within the capac'ityof the change speed gears, and so adapts the machine for perfectly satisfactory operation upon varying kinds and consistencies of material, the change from any one speed to another be ing quickly and instantly accomplished by the mere throwing of a lever. This also enables the apparatus to be readily adapted for use with an alternating current motor, the single constant speed of which might not otherwise be suitable for the machine;

and enlarges the field of speedvariation in case of the employment of a direct current motor of the variable speed type. This capacity is of prime importance in a ma chine of this kind and it also constitutes an my invention.

The foregoing is intended merely as a general statement calculated to set forth certain characteristics indicate their importance as applied to this particular art.

- A practical embodiment of the invention is represented in the accompanying drawings in which:

Fig. 1 represents a side elevation of the ap aratus. 3

ig. 2 representsa top plan viewof the same, partly broken away.

Fig."3'represents a the same:

provisions, I have to F ig. ferent positions.

of my invention and a mod rear end elevation of Fig. 4 represents a'section taken'in the planev of the line IVIV of 'Fig. 1, lookm in the direction of the arrows.

ig. 5 represents a section taken in the plane of the line VV of Fig. 1, looking in the direction of the arrows.

Fig. 6 represents a detail section taken in the. plane of the line VI-VI of Fig. 1, looking in the direction of the arrows.

ig. represents a detail section similar 5, but showing certain'parts in dif- Fig. 8 represents a detail section similar to Fig. 7, showing certain parts indifferent positions.

Fig. 9 represents a detail section taken in the plane of the line IXIX of Fig. 2,

looking in the direction of the arrows.

Fig. 10 represents an enlarged detail section taken in the plane of the line X-X' of Fig. 11, looking in the direction of the arrows.

Fig. 11 represents an enlarged detail end view, showing the means for adjusting one of the eccentric shafts.

Fig. 12 represents a detail section taken in the plane of the linc|XII of Fig. 3, looking in the direction of the arrow.

Fig. 13 represents a. detail section taken in the plane of the line XIII-XIII of Fig. 1, looking in the direction of the arrows.

Fig. 14 represents a detail section. artly in elevation, taken at right angles to Fig. 13. Fig. 15 represents a View similar to Fig. 13, showing certain\parts in a different position. 1

Fig. 16 represents a View similar to Fig. 14, showing certain parts in a ditlerent position.

Fig. 17 represents a plan view, partly in section, of the bed for the apparatus.

Fig. 18 represents a section taken in the plane of the line XVIII-XVIII of Fig.

17. looking in the direction of the arrows.

Fig. 20 represents a detail top plan view showing a modified form of drLve.

Fig. 21 represents a detail vertical section. partly in elevation. of the same.

Fig. 22 represents a detail end elevation of the same.

Fig. 23 represents a detail vertical sectionQshowing a second modified form of drive.-- 7

Fig. 24 represents a detail elevation, of ified form of bearing for the. power shaft.

Fig. 25 represents a section taken in the plane of the line XXVXXV of Fig. 24, looking in the direction of the arrows.

, heapparatus is provided with a bed (see Figs. 17 and 19) which consists of a pair of sills 1, 2, which are composed of hub of the main gear 13,

hollow metal, and are connected by four cross-bars 3, 4, 5, 6, which are also composed of hollow metal and firmly bolted to the sills. The cross-bar 3 takes the form of an open framework and has abase plate 7 which is designed tosupport a pedestal 8 (see Fig. i) that carries the head 9 of the tubing inachine. The head 9, and its interior mechanism, including the screw or.

-tering the parts.

The end of thc'bed opposite to that upon which the pedestal 8 ismounted. carries a pair of rails 14, that are bolted to the top of the sills 1, 2, and project laterally beyond the sill sill 1, they have the-shaft 17 may adjusting the bracket 19 the standard 16. and adjusting the bearing A second standard, denoted by 21 v 1. These'rails 14 serve for the mounting ofthe motor 15 that is calculated to drive the machine. By reason of the fact that the rails project beyond the the capacity for supporting a relatively large motor without necessitating corresponding enlargement of the bed of the apparatus, which enlargement would tend to make the same cumbersome.

Furthermore, the motor may be bolted to the rails 14 at any desired position in order to alin'e its shaft with the shaft of the apparatus intended to be driven thereby.

A standard 16, of inverted V shape. is bolted to the cro"s bar 5, and it is designed to constitute a support for a bearing for the power shaft 17 (see Figs. 1 and 4) that coupled to the shaft of the motor 15 by a conventional form of coupling bracket 19 is bolted to one sloping side of the standard 16, which side isfianged in order to provide a relatively broad support for the said bracket. The upper part of the bracket is formed with a flat surface adaptedto receive the bearing 20 for the shaft 17, which hearing is bolted to the said surface of the bracket 19.' It will-be observed that the arrangement just described is such that be brought into perfect alinement with the shaft of'the motor 15 by along the ride of 20 laterally on the up er face of the bracket. This adjustment may )e made on the bracket and the bearing clamped in position before the parts'are drilled to-receive the cap screws or bolts used for securing them in placet see secured.

, received fron'i the gear on the shaft 28.

me'haniem for the shaft '17,enable'i the gear the cross-bar 4, and it has a flan ed sloping side correspondin to that on tie standard 16, to which sice a bracket 22, which corresponds to the bracket 19, is made :ecure. lar to the bearing 20, is bolted to the flanged upper face of the bracket 2:2, and serves to receive the inner end of the shaft. 17. The construction and arrangement of the bracket 22 and bearing 23 provides for them the same facility of adjustment. as that which has been described in connection with the bracket 19 and bearing :20, so that both bear- Fig. 6) is bolted'to A hearing 23 quite sinnings for the :haft ,17 may be perfectly true with each other and with the shaft of the motor 15. The shaft 17 may be provided with suitable oil guards 24. and with suitable bearing linings, all of which is well understood by an operative. 111 this industry.

. A gear 25 is formed integral witlra sleeve 26 that is keyed to the shaft 17 which gear meshes with a larger transmission gear 27. that is mounted on the drive shaft 28 (see Fig.1. 2 and 4). Oneend of the shaft 28 is journaled in a bearing 29 that is bolted to the flanged sloping ride of the standard 1 (3 opposite to that to which the bracket 19 is The intermediate art of the said shaft is jonrnaled in a bracket 30 bolted to the top of the standard 21 and provided with a loosely fitting flanged bearing 31. The other end of the shaft has an elongated hearing in an inwardly projecting stnd 32 that is lbolted to the adjacent side of the pedesta 8.

The gear 27 has an elongated bearing 33 that is rotatably mounted on the shaft 28, through the inter-mediation of aliner 34 (see Fig. 9). This construction tends to obviate any wabbling or side play of the said gear. A clutch mechanism 35. of a conventional form, engages the inner periphery of the-gear 27 and has its rlcevc 35* keyed to the shaft 28. A lever 36 (see Figs. 4 and 6) for operating the clutch mechanism 35 is pivoted fat 37 .in a bracket 38 secured to the standard 21, and has a pair of fingers 38* for engaging a groove in the sleeve 35*. It will be seen that when the clutch mechanism is 27, the latter will be fixed to the shaft 28 and thereby drive the said shaft when power is 25 on the power shaft 17., \Vhen the clutch mechanism 35 is released from the gear 27 the latter will idle The adjustable supporting engaged with the gear 2!). to be brought'into and kept in perfect 3 I mesh with the gear 27.

A pair of integral gears 39, 40. are keyed for sliding movement on the shaft, 28., and

constitute a double pinion that servcsas a The gear 4051s designed to driving gear.

mate with the mam gear 13, and the geargif no.

39 is intended to mesh with -an idler gear 4;1

I that is mounted the sleeve 45 lever is posite end of the said on a stub shaft42 fixed in the wall of the pedestal 8. The arrangement of the parts just described is such that when the gear 40 is in mesh with the car 13, the gear 39 is out of contact with t- 1c gear 41; and when the gear 39 is in mesh with the gear 41, the gear 40.is out of contactwith the gear 13. i g

Shifting mechanism is provided for sliding the double pinion 39, 40 along the shaft 28, (see Figs. 9, 13, 14, 15, 16). This mechanism includes a stub shaft '43 that is fixed in a bracket 44 secured to the side of the pedestal8 below the shaft 28. A sleeve 45 is mounted to slide on the shaft 43 and has a yoke 46 fitted to engage the integral geals 39, 40. A rod 47 has one end pivoted to and its other end linked to the extremity of an arm 48, the other end of which is keyed to a shaft 49 that is jour-,

naled in the bracket 44. A hand lever 50 (see Fig. 1) is fixed to the other end of the shaft 49 for manipulating the same; and

when the said pulled in one direction, it will swing the'arm- 48 so asto slide the sleeve 45 and hence the gears 39, 40, in one direction, while the reverse operation of the lever 50 will impart opposite movement to the said gears. The rod 47-and arm 48 are so arranged that, in either position of the parts just de scribed, the joints of the said rod and arm are in a straight line, or, in other words, on dead center so as to establish,-in effect, a temporary lock in either position.

An eccentric shaft 51 (see Figs. 10 and 11) has one end journaled in the side of the pedestal'8, as indicated at 52, and the other end mounted in a portion of the bracket 30, as indicated at 53. A sleeve 54 is rotatably mounted on the shaft 51 and has one end fashioned to constitute agear 55, while another gear 56 is splined to the opsleeve 54. The shaft 51 is so mounted that it may be swung inwardly or outwardly so as to bring the gears 55 and 56 into and out of contact with the gears 13 and 41, respectivel eans is provided for siifting the shaft 51 and gears carried thereby as just de-' scribed, which means comprises a hand lever 57 thatis bifurcated and pivoted in the lower part 'of a collar 58 keyed on the extreme end of the shaft 51 The lever 57 carries a tooth 59 that is designed to it will be understood that a mate with diametrically opposed sockets 60,

formed in a loosely fitting flanged bearing 61 that is secured by screws 61* to the face of the part 53 of the bracket 30. -A pair of arms 61 are fixed to the bifurcations of the lever 57, and a pair of retractile coil springs 62 connect the with a cross-head 63 that is secured to an upstanding portion of .the' collar 58 by a screw 64. As will be readily seen, the action 65, 66, 67, 68, are d ends of said arms I of the springs 62 will be to normally urge the tooth 59 toward the plate 61, so as to retain it in either of the sockets 60. In or-' dcr to operate this shifting mechanism, the handle 51 is seized and swung to the right (Fig. 10) in order to disengage the tooth 59 from one of the sockets 60. The lever is.

then swung laterally with respect to the axis of the shaft 51, and moves the said shaft a half turn until the tooth 59 coincides with theother socket 60. WVhen this last position is reached, the tooth is permitted to enter the socket under the influence of the springs 62. Thus the gears 55 and 56 may be locked in mesh with, or out of mesh with, the gears 13 and 41 respectively.

A second eccentric shaft 65 (see Fig. 6) with its sleeve 66 and gears 67, 68, which said parts correspond with the shaft 51, sleeve 54 and gears 55 and 56 (except that the gear 68 is larger than the gear 56) are mounted in the same manner as the corresponding parts just described. These parts esigned to be actuated so as to bring the gears 67 and 68 into and out ofune'sh with the gears 13 and 41, and'to. be locked in either osition by mechanism just like that descri ed in connection with the shaft 51; which last named mechanism is denoted collectively by 69. By reference to Fig. 6, it will be noted that the shafts 51 and 65 with their associated parts are mounted on opposite sides of the shaft 28 a From the foregoing description, it will be seen that the main gear 13 may be driven directly from the shaft 28, by shifting the gear 40 into mesh with the said gear 13. The gear 13 may also be driven indirectly from the shaft 28 by shifting the gear 39 into one gagenient with the gear 41, and shifting the gears 55 and 56 into mesh with the gears 13 and 41, in which case the main gear 13 willbe driven at another rotative speed. Finally, the main .gear 13 may be driven indirectly from the shaft 28 at a third speed, by keeping the gear 39 in mesh with the gear 41, and by swinging the gears 67 and 68'into engagement with the gears 13 and 41, respectively, while'moving the gears 55 and 56 out of engagement with the gears 13 and 41. The three positions of the parts just described are represented in Figs. 5, 7 and 8 of the drawings. This arrangement is of importance 'since it enables the screw or plodder, which is actuated by. the gear 13, to be driven at speeds appropriate to the work to be accomplished.

In case an alternating current motor complished by actuatingthe clutch mecha nis'm 35 so as the shaft 28, so'tha't the said gear may atto release the gear 27 from 4 axial length than the gear 27. a

rigid ands taina considerable speed while running free. The clutch 35 ma then be urged gently into engagement with the gear and the load taken up with a certain slip at first,

The head 9 is provided with the customary steam and water pipes 70, 71,. which lead into a chest 72 secured to the topgf the head, for the purpose of heating or cooling thelatter as may be required. In 10 the present instance, however, I have arranged all the controlling valves'73, 74, 75, p 76 on the front side of the chest 72. This r makes them convenient to the operator and obviates the necessity of reaching around or over the apparatus, with the. consequent danger of being burned.

Referring to the modified form shown in Figs. 20, 21, 22; the base is made shorter and the rails 14 are eliminated together with the motor 15 and its shaft and connected parts. I The drive shaft 28 is provided with a stepped belt pulley 7 7 in place of the gear 27 and its connected parts. This pulley is adapted to receive a belt actuated from a suitable source of wer (these parts not being shown) and tie speed of rotation of the shaft-28 may be varied by a )plying the belt to the different faces of t to pulley in a well understood manner. A standard 78, 30 which is offset in two" directions, is substituted for the standard 16, but, it will be noted that it is arranged to be adjustably bolted to the base. and that it also has a slanting. face 79 to which a bracket 80 may be adjustablysecured. Thus, this standard also provides means for properly alining the shaft 28. By offsetting the standard 78 in a direction parallel to the length of the machine as shown in Figs. 20 and 21'), I am 40 enabl to make the bed smaller and thereby reduce ex use and weight and economize s ace. T is also compensates inpart for t e length of bed of the fact that the stepped pulley 77 is greater in the modified form shown in Fig. 23; fast and loose pulleysi81, 82 are mounted onl the7 shaft:1 .28, ind lifttzdof till: step (1 uley 7, an area a .to g

drivgi by a, shiftable belt (not shown)'in the customary manner.

In this connection, I use a standard 83, which is like the standard 78 except that it is not ofiset laterally. This standard may be.

adjustablybolted to the bed, while a bearing 84 may be adjustably secured to tbe'top thereof, as in the case'of the bracket 79.

Referring to the modified structure shown in Figs, Mind 25, it will be seenthat I substitute an'integral trussed'bearing 85 for 4 the two bearings'20- and 23(sho'wn in the preferred form) for the of supportmg the power shaft 17 t t 25. This Referring to imral element 85 makes a very severa struction V and arran comprising,

' of change speed ,carriesthe gear ybearing, and renders iteas'y to bore the apertures for receiving the shaft 17 in perfect alinement with'each other. As It will be seen by reference to Fig. 25, the truss portion of the element 85 is form with two longitudinal webs 82*,85. The 10 clcment 85 may be suitably enlarged for the reception of the gear 25 and provide hinge knuckles 85*-"* for the reception of the usual cover for the said ear.

In setting up t e apparatus, it will be seen that, after the bed has been assembled, the standards 16 and 21 may be adjusted to exactly the desired'position thereon and bolted in place. The brackets 19 and 29 may also be accurately adjusted on the 80 standard 16 and fastened in place; andmthe bearin' '20 properly adjusted on the bracket. 19 and screwed in place. The brackets 22 and 30 may be properly adjusted and secured on the standard 21, and the bearing 23 similarly adjusted and fastened 0n the I bracket 22. The flanged bearings 31 and 61 (and 'that included in the roup 69) may alsolie suitably. adjusted and secured in the bracket 30. *The motor 15 may be properl located and bolted to the rails 1-1, whic latter may also be located as desired andbolted to the bed. It will clear that these parts may be adjusted and fixed in any desiredor appropriate order and that their construction 15 such that perfect alinement of the rotating arts may be readily obtained, as mentioned above.

I believe that the operation of the apparatus will be' clear to anyone with this industry, in view of the foregoing descri tion, in which the'operation of the f sets of mechanism has been detailed in connection with'their description; and I. desire it to be understood. that various changes may be remrted to in the form, con-' ment of the several parts without departmg from the spirit and sec of my invention. Hence, I do not intend to be limited to the details herein shown and described, except as they may 1 be included in the. claimsi v Wh'at I claim is:

-1.. Apparatus of the character described a screw, a main gear for actuating the screw, a drive shaft, a plurality of sets of change e r slidably mounts for engaging the dnve shaft with themain gear or with either set i 2. App:

ars.

ratus o the character described, comprising, a screw, it mam gear for actuating the screw, a drive shaft, 0. plurahtypf sets. of change speed gears, and a imon slidahly mounted on the drive r engaging it with the main gear or with either set of change speed gears. j p 3. Apparatus of the character described. comprising, a screw, a main gear for actuating the screw, a drive shaft,

a plurality of of change s eed gears radially disposed wit mediate gear,

A and the moving into and out comprising, a screw,

sets of change speed gears, an intermediate gear, and a pinion slidably mounted for of mesh with the main gear and the intermediate gear.

4. Apparatus of the character described comprising, ascrew, a main gear for actuating the screw, and a lurality of sets of change speed gears radially disposed with respect to the main gear.

5. Apparatus of the character described comprising, a screw, a main gear foractuating the screw, a driving gear, and a plurality of sets of change speed gears said driving gear and change speed gears being radially mounted with respect to the main gear. 6. Apparatus of the character described comprising, a screw, a main gear for actuating the screw, a plurality of change speed gears radially disposed with respect to the main gear, an intermediate gear, a pluralit of change s eed gears radially disposed wit 1 respect to t e intermediate gear, and a pinion slidably mounted for engaging either the main gear or the intermediate ear.

7. Apparatus of the character described a plurality of change speed disposed with respect to the a pluralit ing the screw, gears radially main gear, an intermediate gear,

respect to t e intermediate gear, anda donble pinion slidably mounted for enga ing either the main gear or the intermediate gear.

8. Apparatus of the character described comprising, a screw, a main gear for actuating the screw, 9.- change speed gear radially mounted with respect to the main gear, an intermediate gear, a changespeed gear radially mounted w'th respect to the interand a pinion, the said change speed gears being arranged to be moved radially into and out of engagement with the main gear and the intermediate gear pinion being arranged to be moved longitudinally into and out of engagement with the main gear and the intermediate ar. 9. Apparatus of the character described comprising, a screw, a main gear for actuating'the screw, a plurality of change speed gears radially mounted with respect to the I respect to t ma gear,

of change s eed gears radially mounted with lie intermediate gear, and a pinion, the said change speed gears being adapted to be moved laterally into and out of engagement with the main gear and the intermediite'gear, and the pinion being arranged to be moved lon 'tudinally into and out of engagement wit the main gear and the intermediate gear.

10. Apparatus of the character described comprising, a screw, 9. main gear foractw,

' rectly from the drive shaft or a main gear-for actuat- 1 gear,

the main gear and the an intermediate gear, a pluralityating the screw, a driving gear and a plurality of sets of change speed gears arranged to be brought into and out of mesh with the main gear and engagement with the shaft through the intermediation of the change speed gears or without the inter- .mediation of the change speed gears.

12, Apparatus of the character described comprising, a screw, a main atingthe. screw, a drive shaft, a transmission gear thereon, a power gear meshing with the transmission gear for rotating the same, a set of change speed gears, and a double gear mounted for sliding movement in different directions upon the drive shaft for causing the main gear to be driven dithrough the intermediation of the change speed gears.

13. Apparatus of the character described comprising, a pedestal, a screw, a main gear mountedon the pedestal for actuating the screw, a driving gear, a plurality of sets of change speed gears mounted on the pedestal, and means for bringing the change speed gears into and out of engagement with the main gear and driving gear.

14.. Apparatus of the character described comprising, a pedestal, a screw, a main gear mounted on the pedestal, for actuating the screw, a plurality of shafts projectin from the pedestal, a set of change spec gears mounted on each of said shafts, a driving and means for bringing the change speed gears into and. out of engagement with driving gear.

15. Apparatus of the character described comprising, a'pedestal, a screw, a main gear for actuating the screw mounted on the pedestal, a driving gear, a shaft-mounted on thepedestal, a set of change speed gears mounted on said shaft, a stub shaft mounted on the pedestal, an idler gear mounted on said stub change s eed gears into and .outof engagement wit the main gear and the idler gear, and means for establishing connection between the driving gear and the-'main gear with and without the intermediation of the idler gear;

.16." Apparatus of the character. described comprislng, a pedestal, a screw, a main gear for actuating the screw mounted onthe pedestal, a drive shaft, a shaft mounted on the pedestal, a set of change vspeed gears mounted on said shaft, a stub shaft mounted on the, edestal, an idler gear mounted on said st'u shaft, means for bringing the ear for actushaft, means for bringing the change speed gears into and out of engage ment with the main gear and the idler gear, and a double sliding gear for establishing connection between the drive shaft and the main gear with and without the intermediation of the idler gear.,

17. Apparatus of the character described comprising, a pedestal, a screw, a main gear for actuating the screw mounted on the pod estal, a drive shaft, :1 transmission gear thereon, a power gear meshing with the transmission gear for rotating the same, a shaft mounted on the pedestal, a set of change speed gears'mounted on said shaft, a stub shaft mounted on the pedestal, an idler gear mounted on said stub shaft, means for bringing the said change speed gears into and out of engagement with the idler gear and main gear, and adouble gear slidably mounted on the drive shaft for bringing the said drive shaft into driving engagement with either the main gear or with the idler gear.

18. Apparatus of the character described comprising, a screw, a main gear for actuating the screw, a driving gear, a set of change speed gears mounted on an eccentric shaft, andmeans for moving the said change speed gears dgewise. in order to establish connection etween the driving gear and the nain gear and also to break said connection.

19-. Apparatus of the character described comprising. a screw, a main gear for actuating the screw, a driving gear, a set of change speed gears mounted on an eceentric shaft, and means for mov ng the saidchange speed gears edgewise in order to establish connection between the driving gear and the main gearv and also to break said connection, said last named means comprising a hand lever fixed to said shaft and provided with a tooth, a notched plate iiidependent of'said shaft, and means for urging the lever toward the late.

20. Apparatus of the c aracter described comprising, a screw, a main gear for actuating the screw, a drivingfgear, a set of change speed gears mounted on an eccentric .shaft. and means for moving the saidchange speed gears edgewise in order to establish connection between the driving gear and the main gear and also to break said connec tion, said means serving to lock said change speed gears in'either positionfl 21. A paratus' of the character described comprising. a; screw, a main gear -for actuating the screw, a driving gear, a set of changespeed gears mounted on. an eccentric shaft, and means for mo'ving-the-said change speed gears laterallylin .order to establish connection between the driving gear and --themaingear and also to break saidconnection, [said last named means comprismg a hand 'lever fixed to said shaft p11 gear with and from its having an elongated I shaft. and clutch mechanism for engagin provided with a'tooth, a plate independent of said shaft and having diametricallyopposed notches, and 'ineans for i'irging the ever toward the plate, whereby said tooth may be caused to enter either notch and said change speed gears may be locked in either position. i

22; Apparatus of the character described comprising, a screw, a main gear for actu-' ating the screw, a driving gear, an idler gear, a. pair of eccentric shafts mounted one on each side of the idler gear, and means for moving each of said eccentric shafts in a rotary direction in order to establish connection between the driving gear and the main gear and also to break said connection.

23. Apparatus of the character described comprising. a screw, a main gear. for actuating the screw and mechanism for actuating the main gear, said ineehanism'including a drive shaft, and means for supporting said shaft, said means including a standard of inverted V shape, and abearing secured to one side of said standard.

24. Apparatus of the character described comprising, a screw, a main gear for actuating the screw and mechanism for actuating the main gear, said mechanism including a drive shaft, and a standard of inverted V shape for supporting said shaft.

25. Apparatus of the character described comprising, a screw, a main. ear for actuating the screw and mechanismfor actuating the main gear, said mechanism includ ing a drive shaft, a power shaft, and means for supporting said shafts, said means including'a standard of inverted V sha e, and a pair of bearings secured to its es.

26. Apparatus of the cliaracter described comprising, a screw, a main gear. for actufating the screw and mechamsiii for actuating the main gear, said mechanism includmg a transmission gear, itsshaft, a power gear meshing with the transmission gear for rotating the same, and clutch mechanism for engaging" and disengaging the transmission shaft. 27. Apparatus of the character described comprising, a screw, 9. main gear for actuating the screw and mechanism for aetuating the main gear, said mechanism including a transmission gear, its shaft, a power gear ineshin with the transmission-gear for rotating t e same, said'transm ssion gear sleeve bearing on its and disengaging the transmissiongear wit and from its shaft.

2 8. Apparatus of the character. described compris1ng,a screw, mechanism for actuciting the screw, and means for supporting said. screw and mechanism, said means including 'ayinain bed,'.-and a pair of cross (1 rails secured to the top of the bed and projecting laterally therefrom to constitute a support for theudrivingmotor.

'In apparatus of the character described, a screw, a main pedestal for supporting the screw, a drive shaft, a bearing in the pedestal for I shaft, an intermediate gear, a stub shaft mounted in'the pedestal for supporting the intermediate gear, a plurality of sets of change speed gears, and shafts for said chanae speed gears, each shaft having an end journaled in the pedestal. I

30. Apparatus of the character described comprising. a screw, :1 main gear for actuating the-screw, a drive shaft, and intermediate sears for establishing connection beone end of the drive gear and the drive shaft, part of said intermediate gears being movable edgewise and part axially movable.

31'. Apparatus of the character described comprising,

tween the main a screw, a main gear for actuating the screw, a drive shaft, and'intermediate gears for establishing connection between the main gear and the drive shaft, partof said intermediate gears being eccentrically mounted for edgewise movement and part being slidably mounted for axial movement.

In testimony, that I claim the foregoing as my invention, I have signed my name this second day of October, 1919.

' VERNON BOYLE. 

